Answer:
The charge on the ion is +3.
Step-by-step explanation:
We are given the following in the question:
Number of protons = 26
Number of electrons = 23
Charge on 1 proton = +1
Charge on one electron = -1
We have to calculate the total charge on the ion.
Total charge on ion =
=(Number oof proton)(Charge of proton) + (Number of electron)(Charge of electron)
Thus, the charge on the ion is +3.
Answer:
c. 84 if wrong its 72 because im not sure if its esimated but if not its right.
Step-by-step explanation:
42x4.5=189
18x4.5=81
=270
11) 2x+6y-3; x=5,y=4
the question is asking to evaluate for y when x=5 and evaluate for x when y=4,
2x+6y-3
2x+6y=3
2(5)+6y=3
10+6y=3
6y=3-10
y=-7/6 when x=5
2x+6(4)=3
2x+24=3
2x=3-24
x=-21/2 when y=4
12)
Input Output
N 4(n+3)
12 4(12+3) = 4(15)=60
14 4(14+3)=4(17)=68
18 4(18+3)=4(21)=84
25 4(25+3)=4(28)=112
13)8x+y-10; x=4, y=50
8x+y=10
8(4)+y=10
32+y=10
y=10-32
y=-22 when x=4
8x+50=10
8x=10-50
8x=-40
x=-40/8
×=-5/1=-5 when y=50
14) b is correct
15)c is correct
16) c is correct
If you need explanations on these questions, message me.
Answer:
28 = 14 + x, 51 = 38 + x
Step-by-step explanation:
I got both sums because the last part says "is 28" and "is fifty-one," signaling that they each take up one side of the equation. Sum means add (so a + sign) and more than also means add (in this case). X just stands for the numbers not given.
Answer:
3.54
Step-by-step explanation:
move the decimal place over two making the numbers 6 and 21.24
6 goes into 21 3 times with a remainder of 3 (carry it down)
6 goes into 32 5 times with a remainder of 2 (carry it down)
6 goes into 24 4 times with no remainders
put the numbers together and don't forget the decimal
that number is 3.54
(I was trying to explain long division in words and boy is it difficult)
